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Earth Sciences 21 Online
OpenStudy (jmansedg):

Pumice forms _______________ the earth's surface. A. above B. below

OpenStudy (anonymous):

A. A rush of gas from the volcano's vent shreds the magma and blows it out as a molten froth. The froth rapidly solidifies as it flies through the air and falls back to Earth as pieces of pumice.

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